Renesas R5F109GBCJFB#10
- Part No.:
- R5F109GBCJFB#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F109GBCJFB#10.pdf
- Description:
- IC MCU 16BIT 24KB FLASH 48LQFP
- Quantity:
- Payment:

- Shipping:

Inventory:2,000
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Product details
Overview
R5F109GBCJFB#10 from Renesas Electronics is a 16-bit RL78/F12 microcontroller in a 48-pin LQFP package, featuring 64 KB flash memory, 4 KB RAM, and integrated 10-bit ADC with 12 channels. It operates at up to 24 MHz, supports on-chip debug, and includes low-power modes (HALT, STOP) for battery-powered industrial sensors and motor control interfaces.
For engineers reviewing the R5F109GBCJFB#10 datasheet, R5F109GBCJFB#10 pinout, R5F109GBCJFB#10 application, or R5F109GBCJFB#10 equivalent, key selection criteria include flash endurance (100k write/erase cycles), VDD operating range (1.6–5.5 V), and integrated LIN bus support - all critical for automotive body electronics and industrial I/O modules requiring AEC-Q100 alignment.
Technical Context
The R5F109GBCJFB#10 implements the RL78 CPU core with 3-stage pipeline, supporting 16-bit integer arithmetic and bit-manipulation instructions optimized for real-time control. It integrates a 15-channel 10-bit ADC with programmable sampling time and hardware-triggered conversion sequencing.
On-chip peripherals include a 16-bit timer array unit (TAU) with complementary PWM outputs, a serial array unit (SAU) configurable as UART, CSI, or I²C, and a dedicated LIN controller compliant with LIN 2.2A and SAE J2602 standards - all directly accessible via memory-mapped registers without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CPU with 3-stage pipeline, 24 MHz max operation |
| Flash Memory | 64 KB on-chip flash with 100k write/erase cycles; supports block erase and programming during code execution |
| RAM | 4 KB on-chip RAM with retention in STOP mode |
| ADC | 12-channel 10-bit successive-approximation ADC; 1.0 μs conversion time, internal reference (1.45 V) |
| Supply Voltage | 1.6 V to 5.5 V operation; enables direct interface with 3.3 V and 5 V logic systems |
| Operating Temp | −40°C to +85°C ambient; qualified per Industrial grade specifications |
| LIN Support | Dedicated LIN controller with auto-baud detection and checksum generation per LIN 2.2A |
Pinout & Package
Package: 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00–P07 | Port 0 bidirectional I/O | Configurable as general-purpose I/O or alternate functions including UART TX/RX, TAU output, and ADC input |
| P10–P17 | Port 1 bidirectional I/O | Supports high-current drive (20 mA sink/source), used for LED drivers or relay control without external buffers |
| P20–P27 | Port 2 bidirectional I/O | Includes LIN transceiver pins (LINRX/LINTX) and SAU clock inputs; enables single-chip LIN node implementation |
| VDD, VSS | Power supply terminals | Dual power domains: VDD (core/analog) and AVDD (ADC reference); require separate decoupling for noise-sensitive measurements |
| RESET | Active-low reset input | Accepts external reset signal or internal power-on reset; supports low-voltage detection (LVD) interrupt at 2.7 V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 0.52 μA in STOP mode with RAM retention and wake-up on external interrupt - extends battery life in wireless sensor nodes |
| On-chip debug interface | Fully integrated FINE v2 debug circuit with SWD support; eliminates need for external debugger hardware during firmware development |
| Hardware CRC calculator | 8/16/32-bit CRC engine with configurable polynomial; accelerates firmware integrity checks and communication frame validation |
| Programmable voltage detector | Adjustable LVD thresholds (2.3 V to 4.4 V in 0.1 V steps); enables precise brown-out protection for varying supply conditions |
| Self-programmable flash | Supports in-application programming (IAP) with user-defined flash sectors; allows field firmware updates without external programmer |
Applications
| Automotive Body Control Module | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, managing GPIO-driven actuators, and monitoring analog sensor inputs (e.g., potentiometer position). Use Value: Integrated LIN controller and 12-channel ADC eliminate discrete transceivers and external ADC, reducing BOM count by ≥3 components. | Use Scenario: Closed-loop speed control of BLDC motors in HVAC blowers and conveyor systems. IC Role / Device Role / Timing Role: Real-time PWM generation via TAU, current sensing via ADC, and fault handling via dedicated interrupt vectors. Use Value: 24 MHz core clock and hardware PWM dead-time insertion enable ≤1 μs timing resolution for precise commutation timing. |
| Smart Energy Meter Interface | Medical Diagnostic Sensor Hub |
Use Scenario: Data acquisition and local processing in residential electricity meters with pulse output and RS-485 backhaul. IC Role / Device Role / Timing Role: Pulse counting via external interrupt, isolation-coupled UART communication, and secure firmware update via flash IAP. Use Value: 64 KB flash accommodates dual-bank firmware images; 1.6–5.5 V operation supports wide-input isolated DC-DC supplies. | Use Scenario: Signal conditioning and preprocessing for multi-parameter patient monitors (temperature, SpO₂, ECG lead-off). IC Role / Device Role / Timing Role: Simultaneous sampling of 8+ analog channels using ADC hardware trigger chaining and DMA-assisted data transfer. Use Value: On-chip 4 KB RAM with STOP-mode retention preserves calibration data during intermittent power loss in portable devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F109GBDJFB#10 | Same package and pinout; differs only in flash configuration (64 KB vs. 128 KB) and ROM code protection settings | Identical peripheral set and timing specs; suitable where larger firmware footprint is required | Select when future firmware expansion or bootloader partitioning demands >64 KB flash |
| MB9BF516RPMC-G-SNE2 | Fujitsu FM3 Cortex-M3 core; 128 KB flash, 16 KB RAM, no native LIN controller - requires external transceiver | Higher performance but higher power; lacks integrated LIN and low-power STOP mode <1 μA | Choose only if ARM ecosystem compatibility or floating-point math is mandatory; not drop-in compatible |
Compared with R5F109GBDJFB#10, the R5F109GBCJFB#10 offers identical functionality at lower cost and smaller flash footprint; versus MB9BF516RPMC-G-SNE2, it delivers superior LIN integration and ultra-low-power operation but trades off raw compute throughput.
Availability
R5F109GBCJFB#10 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor drives, smart metering, and medical sensor interfaces requiring stable component supply across multi-year production cycles.
Supply support for R5F109GBCJFB#10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and infrastructure markets.
The RL78/F12 product line targets cost-sensitive, low-power embedded applications requiring high integration and functional safety readiness - particularly in automotive body electronics and industrial control nodes.
FAQ
What is the maximum operating frequency of the R5F109GBCJFB#10?
The R5F109GBCJFB#10 operates at a maximum CPU clock frequency of 24 MHz. This is achieved using the on-chip high-speed oscillator (HOCO) or an external crystal/resonator up to 20 MHz with PLL multiplication. The 24 MHz limit ensures deterministic instruction timing and meets the electrical specifications defined in the RL78/F12 Hardware User's Manual Rev.1.20.
Does the R5F109GBCJFB#10 support in-system programming (ISP)?
Yes, the R5F109GBCJFB#10 supports in-system programming via its on-chip debug interface using the FINE v2 protocol over SWD. Firmware updates can be performed without removing the device from the PCB, and the R5F109GBCJFB#10 includes dedicated flash protection bits and sector-locking features to prevent unauthorized reprogramming.
What is the ADC resolution and channel count for the R5F109GBCJFB#10?
The R5F109GBCJFB#10 integrates a 10-bit successive-approximation ADC with 12 input channels. It supports hardware-triggered conversions, scan mode across multiple channels, and internal reference voltage (1.45 V). Conversion time is 1.0 μs per sample under typical conditions, as specified in the RL78/F12 Electrical Characteristics section.
Is the R5F109GBCJFB#10 qualified for automotive applications?
The R5F109GBCJFB#10 is rated for Industrial temperature range (−40°C to +85°C) and is not officially AEC-Q100 qualified. While it shares architecture and many peripherals with automotive-grade RL78 variants, Renesas documentation explicitly designates it for standard-grade applications such as industrial equipment and consumer appliances - not safety-critical automotive systems.
What debug interface does the R5F109GBCJFB#10 use?
The R5F109GBCJFB#10 uses the FINE v2 (Fast In-Circuit Emulator) debug interface, accessible via a 2-wire SWD (Serial Wire Debug) connection. This interface supports full read/write access to memory and registers, real-time trace, and non-intrusive breakpoints - all without requiring dedicated debug pins beyond SWCLK and SWDIO.
R5F109GBCJFB#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- RL78/F12
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 24KB (24K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 5.5V
- Data Converters:
- A/D 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F109GBCJFB#10 FAQ
1.How can I place an order for R5F109GBCJFB#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F109GBCJFB#10 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of R5F109GBCJFB#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F109GBCJFB#10 is usually 5 days.
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6.How does Aetrix verify that R5F109GBCJFB#10 is sourced from the original manufacturer or authorized distributors?
All R5F109GBCJFB#10 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F109GBCJFB#10 meets industry standards.
7.What is the process for return or replacement of R5F109GBCJFB#10?
All R5F109GBCJFB#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F109GBCJFB#10, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R5F109GBCJFB#10 part is unused and in its original packaging.
Return procedure for R5F109GBCJFB#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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